DOCS: fix typos in summaries.

Packages/com.unity.inputsystem/InputSystem/Editor/Analytics/InputActionsEditorSessionAnalytic.cs

@@ -50,7 +50,7 @@ public void RegisterActionEdit()
         }
 
         /// <summary>
-        /// Register than a binding edit has occurred.
+        /// Register that a binding edit has occurred.
         /// </summary>
         public void RegisterBindingEdit()
         {
@@ -297,6 +297,7 @@ public Data(Kind kind)
             /// </summary>
             public int action_modification_count;
 
+            /// <summary>
             /// The total number of binding modifications during the session.
             /// </summary>
             public int binding_modification_count;

Packages/com.unity.inputsystem/InputSystem/Runtime/Actions/InputAction.cs

@@ -103,7 +103,7 @@ namespace UnityEngine.InputSystem
     /// of the action as well as on the interactions (see <see cref="IInputInteraction"/>) present
     /// on the bindings of the action. The default behavior is that when a control is actuated
     /// (that is, moving away from its resting position), <see cref="started"/> is called and then
-    /// <see cref="performed"/>. Subsequently, whenever the a control further changes value to
+    /// <see cref="performed"/>. Subsequently, whenever a control further changes value to
     /// anything other than its default value, <see cref="performed"/> will be called again.
     /// Finally, when the control moves back to its default value (i.e. resting position),
     /// <see cref="canceled"/> is called.

Packages/com.unity.inputsystem/InputSystem/Runtime/Actions/InputActionParameters.cs

@@ -109,7 +109,7 @@ partial class InputActionRebindingExtensions
         /// parameter from the object registered as <c>"tap"</c> (which will usually be <see cref="Interactions.TapInteraction"/>).</param>
         /// <param name="bindingIndex">Index of the binding in <paramref name="action"/>'s <see cref="InputAction.bindings"/>
         /// to look for processors, interactions, and composites on.</param>
-        /// <returns>The current value of the given parameter or <c>null</c> if the parameter not could be found.</returns>
+        /// <returns>The current value of the given parameter or <c>null</c> if the parameter could not be found.</returns>
         /// <remarks>
         /// This method is a variation of <see cref="ApplyParameterOverride(InputActionMap,string,PrimitiveValue,InputBinding)"/>
         /// to specifically target a single binding by index. Otherwise, the method is identical in functionality.
@@ -139,7 +139,7 @@ partial class InputActionRebindingExtensions
         /// name and type of the parameter being looked for.</param>
         /// <param name="bindingMask">Optional mask that determines on which bindings to look for objects with parameters. If used, only
         /// bindings that match (see <see cref="InputBinding.Matches"/>) the given mask will be taken into account.</param>
-        /// <returns>The current value of the given parameter or <c>null</c> if the parameter not could be found.</returns>
+        /// <returns>The current value of the given parameter or <c>null</c> if the parameter could not be found.</returns>
         /// <remarks>
         /// This method is a variation of <see cref="ApplyParameterOverride(InputActionMap,string,PrimitiveValue,InputBinding)"/>
         /// that encapsulates a reference to the name of the parameter and the type of object it is found on in a way that is

Packages/com.unity.inputsystem/InputSystem/Runtime/Actions/InputActionReference.cs

@@ -110,7 +110,7 @@ public void Set(InputAction action)
         /// <paramref name="mapName"/> is <c>null</c> or empty -or- <paramref name="actionName"/>
         /// is <c>null</c> or empty.</exception>
         /// <exception cref="InvalidOperationException">If attempting to mutate a reference object
-        /// that is backed by by .inputactions asset. This is not allowed to prevent side-effects.</exception>
+        /// that is backed by .inputactions asset. This is not allowed to prevent side-effects.</exception>
         /// <exception cref="ArgumentException">No action map called <paramref name="mapName"/> could
         /// be found in <paramref name="asset"/> -or- no action called <paramref name="actionName"/>
         /// could be found in the action map called <paramref name="mapName"/> in <paramref name="asset"/>.</exception>